Hello People,
Iam implementing a simple RC low pass filter. Let me attach the circuit below
I used the digital pin of arduino (pin 12) and provided a square wave output which remains on for 1 sec and off for 1 sec. I connected the Vout to pin A0 of arduino. When i use very high values of resistance like 100 M ohm, my output as expected had a very low near constant dc value. But if i decrease my resistance below 1 M ohm, the output magically reduces to zero. Why is that?
Iam implementing a simple RC low pass filter. Let me attach the circuit below
I used the digital pin of arduino (pin 12) and provided a square wave output which remains on for 1 sec and off for 1 sec. I connected the Vout to pin A0 of arduino. When i use very high values of resistance like 100 M ohm, my output as expected had a very low near constant dc value. But if i decrease my resistance below 1 M ohm, the output magically reduces to zero. Why is that?